title: Parent-reported temperament trajectories among infant siblings of children with autism.
abstract: Temperament atypicalities have been documented in infancy and early development in children who develop autism spectrum disorders (ASD). The current study investigates whether there are differences in developmental trajectories of temperament between infants and toddlers with and without ASD. Parents of infant siblings of children with autism completed the Carey Temperament Scales about their child at 6, 12, 18, 24, and 36 months of age. Temperament trajectories of children with ASD reflected increases over time in activity level, and decreasing adaptability and approach behaviors relative to high-risk typically developing (TD) children. This study is the first to compare temperament trajectories between high-risk TD infants and infants subsequently diagnosed with ASD in the developmental window when overt symptoms of ASD first emerge.
authors.affiliation: Department of Psychiatry and Bio-behavioral Sciences, University of California, Los Angeles, Los Angeles, CA, USA.
authors.forename: Mithi
authors.initials: M
authors.lastname: Del Rosario
authors.forename: Kristen
authors.initials: K
authors.lastname: Gillespie-Lynch
authors.forename: Scott
authors.initials: S
authors.lastname: Johnson
authors.forename: Marian
authors.initials: M
authors.lastname: Sigman
authors.forename: Ted
authors.initials: T
authors.lastname: Hutman
mesh_terms: D001321:Autistic Disorder / Q000175:diagnosis / Q000523:psychology*; D002648:Child; D002657:Child Development; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010290:Parents; D035781:Siblings; D013694:Temperament